Mechanism for winding and setting watches.



E. WOLF. MECHANISM FOR WINDING AND SETTING WATCHES. APPLICATION FILEDMAR. 11. 1910.

966,149. Patented Aug. 2, 1910.

mqlwa'aaaa w H Jmmzar; EM i LE WOLF,

by EMS Attorney.

EMILE WOLF,

OF LA CHAUX-DE-FONDS,

SWITZERLAND.

MECHANISM FOR WINDING AND SETTING WATCHES.

Specification of Letters Patent.

Application filed. March 11, 1910.

Patented Aug. 2, 1910. Serial No. 548,648.

To all whom it may concern:

Be it known that I, EMILE VVoLF, watch manufacturer, citizen ofSwitzerland, residing at La Chaux-de-Fonds, Canton of Neuchatel,Switzerland, have invented a new and useful Mechanism for WVinding andSetting \Vatches; and I do hereby declare the following to be a full,clear, and exact description of the same.

This invention relates to winding and setting mechanism for watches andthe like.

In the accompanying drawing which illustrates the invention, Figure l isa plan partly in section showing the members of the mechanism in windingposition. Fig. 2 is a plan showing the members of the mechanism insetting position.

The mechanism shown comprises a winding stem a adapted to be displacedlongitudinally in a plate I), and on the square part c of which isadapted to slide the sliding pinion cl in the groove 6, of which isadapted to engage the end f of a detent spring 9 pivoted at h andterminating at its other end opposite to f in a heel 2' adapted to bearcontinuously on the lower end k of the stem a; the latter at its upperextremity has a square opening in which is entered the square end Z ofthe stem m arranged in the pendant. Beneath its square opening the stema is provided with a groove n in which engages the finger 0 of a pawl 39pivoted at g and terminating at the other end in a beak 9", againstwhich may abut the projection s on the detent spring near the end f ofthe latter. The winding pinion 6 runs idly on a shoulder u on the stemat as usual in mechanisms of this nature.

The detent spring is formed in such manner that its two ends tendcontinuously to approach one another and thus occupy the position shownin Fig. 2, the end f holding the sliding pinion (Z out of contact withthe winding pinion 25 but causing this sliding pinion to engage with theintermediate wheel 0 of the motion work for setting. The mechanism isblocked in this position, thanks to the nose which is engaged by theprojection s.

For the purpose of winding, it is sufficient to exert upon the stem m apressure in the direction of the arrow 2 (Fig. 2). The end 7c of thestem a acting on the heel i of the detent spring separates the twoextremities of the latter, at the same time that the pawl 22 disengagesthe projection s of this detent-spring, and this puts the sliding pinioncZ out of engagement with the idler '0, and into contact, by the ratchetteeth 1 of this pinion, with the ratchet teeth 2 of the winding piniont. In fact, when the heel i is forced downward by the end is of the stem(4, the foot 00 compels the said heel to separate from the extremity ofthe detent spring (Fig. 1), so that there is produced a couple, which,as soon as the nose 1" leaves the projection 8, brings thesliding-pinion into the winding position (Fig. 1).

For the purpose of setting, one will exert upon the stem m a pull in thedirection of the arrow 8 (Fig. 1), whence it follows that the windingstem a, having become free, is pressed from below upward under theaction of the heel i, which, in virtue of its previous separation,retakes its initial position (Fig. 2). The upward movement of the stem(1 forces the pawl 79 to turn on its fulcrum 9, so that the nose 1",acting against the projection 8, causes the detent-spring to turn on itsfulcrum h and this by its end fbrings the sliding pinion (1 into thesetting position.

Having thus fully described and illustrated my invention, what I claim,is:

In a watch winding and setting mechanism, a pendant, a winding stemmovable longitudinally thereon, a pinion sliding on the winding stem, awinding pinion running idly on the winding stem, grooves in the windingstem and sliding pinion, a pivoted detent-spring abutting with its onearm against the end of the winding stem and engaging with its other armthe groove of the sliding pinion, a projection on the shorter arm of thedetent spring, in combination with a pivoted pawl engaging at one endthe groove in the winding stem and contacting with its other end theprojection on the spring.

In testimony whereof, I have signed my name to this specification in thepresence of two subscribing witnesses.

EMILE WOLF.

IVitnesses:

ARNOLD ESCOFFEY, JEAN SoHEIBnNs'rooK.

